baber/WOPTO huggingface dataset:
Patent CA-2194836-A1 (CA)
Inventor: HOPPE HUGHES H
IPC: G06T15/00
Filed: 1997-01-10
Abstract: An efficient, lossless, continuous-resolution representation (the "PM representation") of highly detailed geometric models for computer graphics specifies a succession of progressively more detailed polygonal meshes (i.e., "progressive meshes") as a base polygonal mesh and a sequence of complete mesh refinement transformations (e.q. , the vertex split transformation) that approximate the model at progressively finer levels of detail. Procedures for storing and transmitting geometric models using the PM representation address several practical problems in computer graphics: smooth geomorphing of level-of-detail approximations, progressive transmission, mesh compression, and selective refinement. An optimized mesh simplification procedure constructs the PM representation of a model from an arbitrary polygonal mesh, while preserving the geometry of the original mesh as well as its overall appearance as defined by its discrete and scalar appearance attributes such as material identifiers, color values, normals, and texture coordinates. In particular, the PM representation and these procedures preserve discontinuity curves such as creases and material boundaries of the geometric model.
Patent CA-2197243-A1 (CA)
Title: Ecrou articule
Inventor: BOIVIN DENIS
IPC: F16B37/08
Filed: 1997-02-26
Abstract: UN ECROU EN TOURNANT SUR UNE VIS OU UNE TIGE FILETEE PERMET DE MAINTENIR EN PLACE UN OBJET QUELCONQUE (EX: PIECE D'UNE MACHINE, PIECE D'UN OUTIL, ENSEMBLE DE SERRAGE ...). DANS LA PRESENTE INVENTION, L'ECROU ARTICULE ET UN ANNEAU ADAPTE PERMETTENT D'EXECUTER LA MEME FONCTION EN GLISSANT LES DEUX PIECES SUR UNE VIS OU UNE TIGE FILETEE. L'ANNEAU EST GLISSEE SUR LA VIS OU LA TIGE PUIS ENSUITE L'ECROU EST ENFILE ET S'EMBOITE DANS L'ANNEAU EN PLACE DE FACON A CE QUE L'ECROU NE S'OUVRE PAS NI NE SE DEPLACE. LA VITESSE D'EXECUTION ETANT LA MEME POUR UNE VIS OU UNE TIGE FILETEE DE 10 CM OU POUR CELLE DE 1 METRE.
Patent CA-2198674-A1 (CA)
Title: Roll-In/Roll-Out Vehicle Seat System with Fixed Wheel Members
Inventor: SMUK WOJCIECH
IPC: B60N2/015
Filed: 1997-02-27
Abstract: A vehicle seat system is disclosed, comprising a seat structure mounted on two supports. Front and rear connectors are mounted on each support. Front anchors extend across front wells in the vehicle floor. Rear anchors extend across rear wells in the vehicle floor. Front and rear wheels are non-retractably, rotatably mounted upon each support, adjacent the connectors. Upon forward rolling movement of the seat structure, the front wheels each enter a base area of a respective one of the front wells, thereat to permit each of the front connectors to releasably, securingly engage a respective one of the front anchors, and the rear wheels each enter a base area of a respective one of the rear wells, thereat to permit each of the rear connectors to releasably, securingly engage a respective one of the rear anchors, thereby to secure the seat assembly to the vehicle.
Patent CA-2199762-A1 (CA)
Title: A transmission system for digital audio broadcasting using pseudo-random number sequences in frame headers
Inventor: WANG JIN-DER
IPC: H03M13/27
Filed: 1997-03-12
Abstract: A digital audio broadcasting (DAB) system includes a radio-frequency (RF) transmitter and a corresponding RF receiver. The RF transmitter formats a DAB  signal into a sequence of frames, each frame having a header comprising a predefined grouping of pseudo-random number sequences comprising 100 symbols. Of these 100 symbols, 86 symbols of the header are used for frame synchronization and channel sounding (for characterization of a communications channel), while the remaining 14 symbols are used for interleaver and data synchronization in an interleaved fashion.
Patent CA-2201844-A1 (CA)
Title: Fastener-driving tool having adjustable controlling mechanism
Inventor: VAN ERDEN DONALD L
IPC: B25C7/00
Filed: 1997-04-04
Abstract: An improved mechanism for controlling a fastener-driving tool comprises a workpiece-contacting element, a tool-controlling element movable conjointly with the workpiece-contacting element over a limited range, a spool defining having athreaded connection with the workpiece-contacting element and a swivel connection with the tool-controlling element and having axial ribs alternating with axial ribs, and a spool-restraining element movable along a radial line between a spool-restraining position and a spool-releasing position and biased toward the spool-restraining position. The spool-restraining member is arranged to restrain the spool against rotating at the swivel and threaded connections by projecting into any given one of the grooves, between the ribs nearest to the given one of the grooves, when the workpiece-contacting element is moved inwardly from an outer portion of the limited range but not when the workpiece-contacting element is within the outer portion of the limited range.
Patent CA-2202557-A1 (CA)
Title: Reflective rubber marker
Inventor: CLEMENT PAUL RIEL
IPC: E01F9/50
Filed: 1997-04-14
Abstract: Apparatus that would serve as a marking unit embedded in the surface of the asphalt. This apparatus would be of reflective material that would reflect when a beam of light is projecting towards this apparatus. This apparatus would also be made of a flexible material, in some cases a rubber compound comprising of different types of neoprene and rubber composites. These materials would be mixed together to incorporate the rubber or other substance with the reflective material either paint or reflective particles. This apparatus would be adhered into its prepared road surface. This apparatus would allow the occupants of motor vehicles to see the markings at night and in extreme driving conditions.    This apparatus would allow a visual reflector even if the road surface was covered by water or snow. This apparatus would also allow snow removal equipment to be operated without concern of removing this apparatus. This apparatus would also help the operators of motor vehicles to stay in there lanes by creating a hollow sound when they are passing over the said apparatus. This apparatus would keep the motorist aligned by creating a vibration to the wheel when travelling on or across the apparatus.
Patent CA-2204368-A1 (CA)
Title: Inserter for the positioning of an intrauterine device
Inventor: CONWAY JOHN KELSHAW
IPC: A61F6/14
Filed: 1995-12-05
Abstract: An inserter (10) for the positioning of an intrauterine device (IUD, 40) in the uterus which inserter comprises a plunger (11), a handle (20) attached to the plunger, a string (41) for the removal of the IUD, a locking device to lock the string in such a way that the IUD remains immobile in relation to the plunger, and a protective tube (12) around the plunger. The protective tube (12) is arranged in relation to the plunger in such a way that it can be pushed, at the forward end (12') that goes into the uterus, past the plunger at distance (L), which corresponds substantially to the length of the IUD assembled for insertion. The stop members (R1 and R2) ensure that the front edge (12a, toward the uterus) of the protective tube is stopped in a configuration in which the hemispherical tips (42a, 43a) of the wings (42, 43) of the transverse member of a T-shaped IUD remain partly uncovered by the protective tube (12), but the wings (42, 43) nevertheless remain pressed against each other.
Patent CA-2207218-A1 (CA)
Title: Controlled release composition forming a reversed micellar (l2) structure or a normal micellar (l1) structure
Inventor: LJUSBERG-WAHREN HELENA
IPC: A61K9/107
Filed: 1995-12-08
Abstract: A controlled-release composition for a biologically active material, characterized in that it comprises a mixture of: a) monocaproin, optionally in admixture with monocaprylin and/or monocaprin, and b) a polar liquid selected from the group consisting of such polar liquids which are capable of forming an L2 phase with a), and c) a biologically active material dissolved or dispersed in said mixture of a) and b), a) being present in the composition, based on the total weight of a) + b), in an amount of from the lower limit where the mixture of a) and b) forms a reversed micellar (L2) structure and up to 100 % by weight of a), with the further proviso that said mixture of a) and b) is essentially within that specific domain of the L2 structure, in a phase diagram, where said L2 structure will change to a normal micellar (L1) structure if contacted with an external polar liquid. Said composition is preferably used as a medical composition.
Patent CA-2208166-A1 (CA)
Title: Re-forming thermoplastic materials
Inventor: WOOD JOHN
IPC: B29C55/24
Filed: 1995-12-18
Abstract: Method and apparatus for re-forming walled thermoplastics members including pipe (12) as re-lining of worn-out pipeline (20) by heating (14) to soften throughout wall thickness without melting, and re-sizing/re-shaping by fluid pressure (16). Infrared heating radiation (14) and progressive change of thermoplastics (polyethylene) from absorptive to useful transparency at or near crystalline melt (below full melt) temperature allows self-regulation of heating, as well as replacement of original thermoplastic memory of geometry. Preferred compact machine (10) combines heating elements array (22), pressurising gas turbine (18) and electric power generator (30) in coaxial/concentric arrangement.
Patent CA-2212105-A1 (CA)
Inventor: WOOD JAMES A
IPC: B60T13/66
Filed: 1997-07-31
Abstract: A control unit includes several magnet and air piloted valves, a transducer,  a transmitter,  a pressure switch and a pipe network.   Controlled by a central controller, the apply and release valves allow a first trainline to charge a pipe network or vent to atmosphere whereas the emergency release valve can vent a second trainline to atmosphere.   The transfer valve connects the first trainline to a command port of the control unit unless its pilot port receives an emergency braking request in which case it connects the pipe network to the command port.          The transducer converts pressure in the first trainline to an electrical signal.  The transmitter conveys this signal to a control bus.  The pressure switch closes if the second trainline charges to a preset pressure.   Upon closure of the pressure switch and a command from the controller, the charging valve allows the pipe network to charge the second trainline to a threshold level.  The maintaining valve permits the pipe network to charge the second trainline unless pressure at its pilot port falls below the threshold.  The regulating valve regulates air from a primary port of the control unit for use in the pipe network.  The pipe network allows the apply valve, the first trainline and the regulating valve to supply air to the transfer valve, charging valve, maintaining valve and a master port of the control unit.  When pressure in the second trainline drops faster than a predetermined rate, the vent valve vents the second trainline to atmosphere.
Patent CA-2216251-A1 (CA)
Title: Stockage de longue duree de globules rouges en solution non congelee
Inventor: MERYMAN HAROLD T
IPC: A61K35/18
Filed: 1996-03-22
Abstract: L'invention porte sur un procédé permettant de prolonger la durée de stockage de globules rouges réfrigérés consistant à séparer le plasma d'avec les globules rouges, à conserver le plasma résiduel, à ajouter aux globules rouges une solution à compatibilité biologique présentant une osmolalité efficace de moins de 70 mOsm vis à vis des globules rouges et comprenant au moins un soluté pénétrant les globules rouges plus lentement que l'eau, et sensiblement exempt d'anions non pénétrants et de non électrolytes non pénétrants.
Patent CA-2216569-A1 (CA)
Inventor: PHILIPPE MICHEL
IPC: A61K8/00
Filed: 1997-10-10
Abstract: L'invention se rapporte à l'utilisation de dérivés d'oxazolidinone dans une composition à application topique, notamment cosmétique ou dermatologique. Ces dérivés permettent notamment d'empêcher la pénétration d'actifs compatibles avec la peau, les cheveux et/ou les muqueuses, et ainsi de réduire voire supprimer les effets secondaires de ces actifs sans diminuer leur efficacité. Ainsi, les compositions cosmétiques ou dermatologiques contenant de tels actifs permettent de traiter en douceur la peau, les muqueuses et les cheveux.
Patent CA-2220950-A1 (CA)
Inventor: HOFLAND HANS
IPC: A61K48/00
Filed: 1996-05-21
Abstract: L'invention a pour objet des véhicules d'apport de polynucléotides stables (SPDV) qui contiennent, comme éléments structuraux, un complexe polynucléotidique/lipides cationiques. Les SPDV de l'invention peuvent éventuellement comprendre des lipides amphipatiques biodégradables de synthèse, et des agents de ciblage adéquats.
Patent CA-2223323-A1 (CA)
Title: Recipients a asphalte perdus et procede de reduction des fumees degagees par un fondoir contenant de l'asphalte fondu
Inventor: TRUMBORE DAVID C
IPC: C10C3/00
Filed: 1996-06-05
Abstract: On moule un récipient perdu à partir d'une composition comprenant 40 à 90 % en poids d'un asphalte et 10 à 60 % en poids d'une matière polymère, et pouvant contenir avantageusement un premier polymère tel qu'un PP qui confère une résistance à la chaleur et un second polymère tel que l'EVA qui confère la ténacité et la résistance au choc. Cette matière moulée à l'asphalte/polymère présente de préférence une résistance au choc d'au moins 2 joules selon l'essai du type Izod sur éprouvette lisse. Le récipient est du type perdu, c'est-à-dire qu'il peut être fondu conjointement avec l'asphalte de couverture qu'il contient sans que cela ne nuise au propriétés de l'asphalte et sans qu'un mélange inutile ne soit nécessaire. Ladite composition peut également être utilisée pour réduire les fumées normalement dégagées par un fondoir contenant de l'asphalte fondu, réduction qui se manifeste par exemple par une réduction de l'opacité visuelle des fumées d'au moins 25 %, une réduction des émissions d'hydrocarbures d'au moins 20 % ou une réduction des émissions particulaires totales en suspension des fumées d'au moins 15 %. Le récipient peut être utilisé, par exemple pour contenir de l'asphalte de couverture ou de pavage ou une matière recyclable dérivée du pétrole, tel que de l'huile moteur usée. Dans un mode de réalisation, la composition du récipient peut contenir un ou plusieurs ingrédients pour améliorer la qualité de l'asphalte de pavage.
Patent CA-2223473-A1 (CA)
Inventor: GILLERFALK BJOERN
IPC: A61M1/16
Filed: 1996-07-03
Abstract: A device in a dialysis machine for exchangeable connection of a powder cartridge (11) between an inlet (56') and an outlet (56) for liquid. The inlet and the outlet are provided in one and the other, respectively, of two yaws (12, 14), and at least one of these is guided for linear displacement towards and away from the other one for engaging the yaws with the powder cartridge (11) under connection of the inlet and the outlet to a hollow stud (18, 19; 31) on the powder cartridge positioned between the yaws for conducting liquid through the cartridge, or for interengaging of the yaws for short circuit of the inlet and the outlet.
Patent CA-2224620-A1 (CA)
Title: Height adjustable counterbalance workstation
Inventor: GRBIC DRAGAN
IPC: A47B9/02
Filed: 1997-12-11
Abstract: A height adjustable workstation uses a torsion spring in association with a transmission for providing a counterbalance force opposing downward forces applied to the work surface. The workstation has telescoping legs and the telescopic movement thereof is transmitted through the transmission system to the torsion spring. The torsion spring is loaded and applies the counterbalance force to the legs via the transmission. The system includes a hand engaging adjustment mechanism for varying the magnitude of the counterbalance force and also includes a lock arrangement for locking the workstation at various selected positions. The preferred transmission system includes a rack and pinion gear arrangement connected to the torsion spring by a shaft.
Patent CA-2225582-A1 (CA)
Title: Device for providing rotational ouput
Inventor: WHAN GHEM SHENG
IPC: F03B17/04
Filed: 1997-12-22
Abstract: A device which is immersed in liquid for providing rotational output comprising a circular rail (8) and a rotational hub within the rail (8) consisting of a central output shaft (14) from which diametral spokes (10) attached to flexible-walled chamber (12) radiate, the rotation of the spokes (10) is caused by the more expanded chambers (12) being more buoyant will have the tendency to rise in the liquid.
Patent CA-2227818-A1 (CA)
Title: Solid state lasers
Inventor: ROBERTSON JOHN
IPC: H01S3/0941
Filed: 1996-10-22
Abstract: A solid state laser has a slab of lacing material (5). The slab (5) is elongate having a rectangular cross section with the lower face (5a) of the slab contacting a slab mount (6) which is of a high thermal conductivity material. Energy to drive the lasing medium is provided by a flash lamp (8). Upper and lower faces (5a, 5b) of the slab (5) are polished to an optically smooth finish so that light is able to propagate in a generally axial direction through the slab (5). Side faces (5c, 5d) of the slab (5) are polished and then re-roughened to provide a finish with a surface damage zone comparable in depth to the wavelength of the lasing emission. For a lacing wavelength of 1 µm, the depth of surface damage is in the region of 1 µm.
Patent CA-2227841-A1 (CA)
Inventor: BOUMAN DIRK
IPC: D04H1/407
Filed: 1996-05-24
Abstract: Procédé de liaison de tissu fibreux qui comporte un matériau absorbant l'eau, selon lequel un tissu lâche préformé est mis en contact avec de l'eau. L'eau peut être utilisée pour ancrer le matériau absorbant l'eau dans un tissu fibreux et/ou pour lier les particules lâches au tissu fibreux non tissé.
Patent CA-2229641-A1 (CA)
Title: Time division duplex repeater for use in a cdma system
Inventor: DEAN RICHARD F
IPC: H04B1/69
Filed: 1996-08-29
Abstract: A method and apparatus for time division duplex (TDD) repeating a spread spectrum signal, said spread spectrum signal comprised of a series of code symbol modulated with a pseudonoise (PN) sequecne. The TDD  repeater receives intermittently the spread spectrum signal at a location remote from a source supplying the spread spectrum signal. The TDD repeater amplifies and delays the received spread spectrum signal by a predetermined amount. The TDD repeater transmits intermittently the delayed amplified received spread spectrum signal such that the TDD is not receiving the spread spectrum signal when it is transmitting the signal energy.
Patent CA-2229945-A1 (CA)
Title: Method for purifying gas loaded with dust
Inventor: VAN DER GIESEN ABRAHAM BAREND
IPC: B01D50/00
Filed: 1998-02-19
Abstract: Method for purifying gas loaded with dust particles of various sizes, which method comprises the following steps: (a) the gas loaded with dust particles is subjected to wet gas scrubbing at or above the dew point, during which operation any acid gaseous components present in the gasare absorbed and the major proportion of coarse dust particles having a size of ~ 50 µm is removed by a scrubbing liquid, after which (b) the remaining dust particles present in the gas are collected at or above the dew point in an installation for removing dust from gas, purified gas being obtained.
Patent CA-2230107-A1 (CA)
Inventor: ZEN LUIGI
IPC: A47C1/027
Filed: 1998-03-26
Abstract: A swinging supporting frame for a chair seat and back, comprising: - a sustantially horizontal arm (1) for fastening a chair seat; - a telescopic rod (2) supporting the chair back and being hinged to said arm (1); - one or more springs (40) acting on said vertical rod to push the chair back forward; - a spacer (44) inserted between the walls (5) of said horizontal arm; and - screw means (16) for pressing the walls of said telescopic rod (2) against the walls (5) of said arm (1) and against said spacer (44) to lock the chair back in position, wherein said springs (40) are helical springs inserted onto the hinge pin (6) which is fitted on said arm (1) and said telescopic rod (2), one of the ends of said springs acting directly against the wall of said arm (1) and the other spring end acting against said rod, in particular against said spacer (44) inserted on said clamping screw means. A plurality of friction plates (1) are arranged between said spacer (44) and the walls of said arm (1), and in order to position and set up said plates (10), said frame includes a pair of teeth (8, 9) obtained in the walls (5) of said arm by blanking and drawing.
Patent CA-2232204-A1 (CA)
Inventor: PATEL RASIK
IPC: B60R13/02
Filed: 1998-03-16
Abstract: An automobile roof headliner includes a relatively stiff molded backing sheet and a relatively deformable foam panel adhesively secured to the undersurface of the backing sheet.  Marginal edge areas of the foam panel in contact with hard side rails on the roof are provided with resilent deformable foam inserts that prevent the hard side rails from interfering with the energy-absorption action of the foam panel.
Patent CA-2232844-A1 (CA)
Inventor: STANKWITZ HERBERT C
IPC: G01S7/32
Filed: 1996-09-19
Abstract: In systems wherein signal compression is performed using matched filters or transforms, as in the case of radar, multiple extrapolations are used to resolve beyond the limits of diffraction. In one example (Figure 4), development of the method begins with a complex, uniformly weighted SAR or inverse SAR signal represented by a rectangle function. After performing an FFT (34), adaptive sidelobe reduction is carried out followed by an inverse weighting and truncation, after which the original signal is used to replace the center portion of the extrapolated signal (Figure 7). The signal is again transformed and sidelobe reduced, and inverse weighting and truncation are again performed, followed by the original data replacement step. The extrapolation procedure may be repeated end times, extrapolating each time by a factor K for a total extrapolation factor of K = kn.
Patent CA-2233353-A1 (CA)
Title: Food fortified with calcium
Inventor: REDDY SEKHAR
IPC: A23L1/304
Filed: 1998-04-28
Abstract: A fortified foodstuff comprising a fortifying amount of a complex formed by the interaction of a soluble calcium salt and an alkali metal citrate and a process for its preparation which comprises forming the complex and adding the complex to the foodstuff or forming the complex in the foodstuff.
Patent CA-2234750-A1 (CA)
Title: Process for producing diacetoxybutene
Inventor: KANDORI HIROAKI
IPC: C07C67/54
Filed: 1998-04-14
Abstract: A process for producing diacetoxybutene is described, which comprises reacting butadiene, acetic acid, and oxygen in the presence of a noble-metal catalyst to yield diacetoxybutene and distilling the resultant reaction product mixture containing the diacetoxybutene in a distillation column to distill off acetic acid and other low-boiling ingredients through the column top and to discharge residue containing the diacetoxybutene from the column bottom, said distillation column having a shell-tube type multitubular heat exchanger for heating a column bottom liquid, the column bottom liquid being passed through the heat exchanger at a flow rate of 0.7 m/sec or higher as measured at the inlets of the heat exchanger tubes.
Patent CA-2234959-A1 (CA)
Inventor: HUANG TZU-LI J
IPC: C09K3/18
Filed: 1996-09-30
Abstract: A silica-based water-spreading coating having surfaces of silica particles coated with a metal oxide. The metal comprises aluminum, gallium, germanium, tin, indium, arsenic, antimony or vanadium. The water-spreading coating may be applied to a retroreflective sheeting on a traffic sign.